Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 1,887	$ 1,429	$ 3,428	$ 2,962
Other comprehensive income (loss), net of reclassification adjustments:
Foreign currency translation and other gains (losses)	180	(4)	290	(27)
Unrealized gains (losses) on marketable securities	(3)	48	28	18
Other comprehensive income (loss), before tax	177	44	318	(9)
Tax effect	0	(10)	(5)	(2)
Other comprehensive income (loss), net	177	34	313	(11)
Comprehensive income	$ 2,064	$ 1,463	$ 3,741	$ 2,951